In order to open trade with japan, president millard fillmore a. endorsed the mckinley tariff. b. announced the open door policy. c. sent commodore matthew perry there with a fleet. d. sent 150 u. s. marines there to suppress a revolt.

Among the options given on the question the correct answer is option C.

sent Commodore Matthew Perry there with a fleet.

Explanation: The expedition led by Commodore Matthew Perry to Japan is known as the Perry Expedition under the order of US president Millard Fillmore. The expedition took place during 1853 to 1854 involving two separate fleets including warships.

The expedition was both diplomatic and military. Because the President of US wanted the fleet to make an end of the Japanese Isolation policy of 220 years old. There were many strong reasons for sending the fleet to Japan. Because in order to increasing trade with China, there were US ships regularly on the water of Japan. Moreover, the attempt of British and Dutch monopoly on the coaling station also inspires Millard Fillmore to force Japan to allow US for setting up coaling station.

However,the fleet reached at the Ryokyo Island with Susquehanna. After threatening of attack from Perry the Japanese gave him permission to land and then they accepted the letter from the President of the United states. Three days later the fleet left the port in order to return in USA.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain